package com.offcn.order.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableResourceServer;
import org.springframework.security.oauth2.config.annotation.web.configuration.ResourceServerConfigurerAdapter;
import org.springframework.security.oauth2.provider.token.TokenStore;
import org.springframework.security.oauth2.provider.token.store.JwtAccessTokenConverter;
import org.springframework.security.oauth2.provider.token.store.JwtTokenStore;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.stream.Collectors;

@Configuration
@EnableResourceServer
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
//激活方 法上的PreAuthorize注解
public class ResourceServerConfig extends ResourceServerConfigurerAdapter {
    //公钥
    private static final String PUBLIC_KEY = "public.key";
    /*** * 定义JwtTokenStore * @param jwtAccessTokenConverter * @return */

    @Bean
    public TokenStore tokenStore(JwtAccessTokenConverter jwtAccessTokenConverter) {
        return new JwtTokenStore(jwtAccessTokenConverter);
    }

    /*** * 定义JJwtAccessTokenConverter * @return */

    @Bean public JwtAccessTokenConverter jwtAccessTokenConverter() {
        JwtAccessTokenConverter converter = new JwtAccessTokenConverter();
        converter.setVerifierKey(getPubKey());
        return converter;
    }

    /*** 获取非对称加密公钥 Key * @return 公钥 Key */
    private String getPubKey() {
        Resource resource = new ClassPathResource(PUBLIC_KEY);
        try {
            InputStreamReader inputStreamReader = new InputStreamReader(resource.getInputStream());
            BufferedReader br = new BufferedReader(inputStreamReader);
            return br.lines().collect(Collectors.joining("\n"));
        } catch (IOException e){
            return null;
        }
    }

    /*** * Http安全配置，对每个到达系统的http请求链接进行校验 * @param http * @throws Exception */
    @Override
    public void configure(HttpSecurity http) throws Exception {
        //所有请求必须认证通过
        http.authorizeRequests().anyRequest().authenticated();
        //其他地址需要认证授权
    }
}